CVE-2023-28504
📋 TL;DR
This CVE describes a critical stack-based buffer overflow vulnerability in Rocket Software's UniData and UniVerse database products. Attackers can exploit this remotely to execute arbitrary code with root privileges, potentially gaining complete control over affected systems. Organizations running vulnerable versions of these database servers are at risk.
💻 Affected Systems
- Rocket Software UniData
- Rocket Software UniVerse
📦 What is this software?
Unidata by Rocketsoftware
Universe by Rocketsoftware
Universe by Rocketsoftware
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains root access to the database server, leading to complete system compromise, data theft, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to database compromise, data exfiltration, and potential ransomware deployment.
If Mitigated
Attack prevented by network segmentation and proper patching, with only failed exploit attempts logged.
🎯 Exploit Status
Buffer overflow in UniRPC server allows remote exploitation without authentication. CVSS 9.8 indicates trivial exploitation with high impact.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: UniData 8.2.4 build 3003 or later; UniVerse 11.3.5 build 1001 or later, or 12.2.1 build 2002 or later
Vendor Advisory: https://www.rocketsoftware.com/support/security-bulletins
Restart Required: Yes
Instructions:
1. Download the patched version from Rocket Software support portal. 2. Backup all databases and configurations. 3. Install the update following vendor documentation. 4. Restart the UniRPC service or entire server.
🔧 Temporary Workarounds
Network Segmentation
linuxRestrict access to UniRPC server ports (typically 31438-31439) to only trusted hosts.
iptables -A INPUT -p tcp --dport 31438:31439 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 31438:31439 -j DROP
Service Disablement
linuxTemporarily disable the UniRPC service if not required for operations.
systemctl stop unirpc
systemctl disable unirpc
🧯 If You Can't Patch
- Implement strict network access controls to limit UniRPC server exposure
- Deploy host-based intrusion prevention systems (HIPS) to detect buffer overflow attempts
🔍 How to Verify
Check if Vulnerable:
Check UniData/UniVerse version against affected ranges. For UniData: uv -v; For UniVerse: uv -v or check installation directory version files.Check Version:
uv -vVerify Fix Applied:
Confirm version is patched: UniData >= 8.2.4 build 3003; UniVerse >= 11.3.5 build 1001 or >= 12.2.1 build 2002.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from UniRPC service
- Buffer overflow error messages in UniRPC logs
- Failed authentication attempts to UniRPC
Network Indicators:
- Unusual traffic patterns to UniRPC ports (31438-31439)
- Large payloads sent to UniRPC service
SIEM Query:
source="unirpc.log" AND ("buffer overflow" OR "segmentation fault" OR "access violation")